CN112940728A - Red light luminescent material with multiband wavelength excitation and similar double perovskite structure, and preparation method and application thereof - Google Patents
Red light luminescent material with multiband wavelength excitation and similar double perovskite structure, and preparation method and application thereof Download PDFInfo
- Publication number
- CN112940728A CN112940728A CN202110158930.XA CN202110158930A CN112940728A CN 112940728 A CN112940728 A CN 112940728A CN 202110158930 A CN202110158930 A CN 202110158930A CN 112940728 A CN112940728 A CN 112940728A
- Authority
- CN
- China
- Prior art keywords
- red light
- source
- europium
- double perovskite
- luminescent material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
- C09K11/7732—Halogenides
- C09K11/7733—Halogenides with alkali or alkaline earth metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y20/00—Nanooptics, e.g. quantum optics or photonic crystals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/02—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies
- H01L33/26—Materials of the light emitting region
Abstract
The invention discloses a red light luminescent material with a multiband wavelength excitation and a double perovskite-like structure, a preparation method and application thereof, wherein the preparation method of the red light luminescent material comprises the following steps: dropwise adding a methanol solution containing a europium source into a methanol solution containing a potassium source and a fluorine source, and stirring and mixing to obtain a precursor solution; carrying out solvothermal reaction on the precursor solution at 100-140 ℃ for at least 8h to obtain a reaction solution, cooling the reaction solution, carrying out solid-liquid separation, washing and drying to obtain the multi-band wavelength excited double perovskite-like red light luminescent material KEu2F7Nanocrystalline materials which may be in the ultraviolet, blue or green rangeThe light is excited to emit red light, and the red light can be applied to a light-emitting device to prepare a QLED red light-emitting device.
Description
Technical Field
The invention belongs to the technical field of luminescent materials, and particularly relates to a red light luminescent material with a multiband wavelength excitation double perovskite-like structure, and a preparation method and application thereof.
Background
Light Emitting Diodes (LEDs), which are semiconductor solid state Light Emitting devices, are solid state lighting sources. It uses solid semiconductor chip as luminescent material, and uses the carrier to generate recombination in the semiconductor and emit the photon caused by the excess energy, and directly emits the red, yellow, blue, green, white lights, etc. The LEDs are the most important green energy-saving light source in the 21 st century because of high photoelectric conversion efficiency, low energy consumption, long service life and environmental protection. Currently, the main method for realizing commercial LEDs lighting devices is to package fluorescent powder and LEDs emitting blue light or near-ultraviolet light into LEDs lighting devices, so as to obtain bright blue light, green light, red light and white LEDs. Therefore, the research on luminescent materials with high matching degree with LEDs, higher luminous efficiency, longer service life, higher color purity and simple synthesis method is a research hotspot in the industry today.
The perovskite material is used as a new photoelectric material to be applied to future device display due to excellent optical properties such as high fluorescence quantum efficiency, narrow emission peak width, adjustable fluorescence emission spectrum and the like. And the production cost is low, and the preparation process flow is simple, so that a good foundation is provided for future large-scale commercial production.
Disclosure of Invention
The invention aims to provide a red light luminescent material KEu with a multiband wavelength excitation and a double perovskite-like structure2F7It can emit red light under the excitation of ultraviolet light, blue light or green light.
The invention also aims to provide a preparation method of the red light luminescent material with the multiband wavelength excitation and the double perovskite-like structure, which is prepared by a one-step solvothermal method and has the advantages of simplicity and convenient operation.
The invention also aims to provide application of the red light-emitting material with the multiband wavelength excitation double perovskite-like structure in a light-emitting device, and the red light-emitting material can be applied to a red light-emitting device excited by ultraviolet light, blue light or green light.
The invention also aims to provide a QLED red light-emitting device containing the red light-emitting material with the multiband wavelength excitation double-perovskite-like structure.
In order to realize the purpose, the invention adopts the technical scheme that:
the invention provides a red light luminescent material with a multiband wavelength excitation and a double perovskite-like structure, wherein the red light luminescent material is europium potassium fluoride (KEu)2F7) A nanocrystalline material.
Further, the europium fluoride potassium nanocrystalline material is nanoscale granular powder with the grain size of 10-30 nm. The shape of the granular powder is quadrilateral.
The invention provides a preparation method of a red light luminescent material with a multiband wavelength excited double perovskite-like structure, which comprises the following steps:
(1) dropwise adding a methanol solution containing a europium source into a methanol solution containing a potassium source and a fluorine source, and stirring and mixing to obtain a precursor solution;
(2) and carrying out solvothermal reaction on the precursor solution at 100-140 ℃ for at least 8h to obtain a reaction solution, cooling the reaction solution, and carrying out solid-liquid separation, washing and drying on the reaction solution to obtain the multiband wavelength excited double perovskite-like red light luminescent material.
Further, the potassium source is potassium hydroxide.
The fluorine source is ammonium fluoride.
The europium source is europium chloride or europium nitrate.
The mass ratio of the europium source, the potassium source and the fluorine source is 0.5: 5-18: 6.
the concentration of the fluorine source in the methanol solution containing the potassium source and the fluorine source is 0.3M to 0.9M, preferably 0.6M.
The concentration of the europium source in the methanol solution containing the europium source is 0.01M to 0.03M, preferably 0.025M.
In the step (1), the stirring and mixing time is 1 h.
In the step (2), the solvothermal reaction time is preferably 8-12 h.
The solid-liquid separation is centrifugal separation, the rotating speed of the centrifugal separation is 8000-12000 r/min, and the time is 5-15 min.
And the washing is to alternately wash the separated solid matters for 2-3 times by using ethanol, and the solid matters are separated during washing by centrifugal separation.
And the drying is to dry the cleaned solid object at 60-100 ℃.
The invention also provides application of the red light luminescent material with the multiband wavelength excitation double perovskite-like structure in a luminescent device.
The invention also provides a QLED red light emitting device containing the red light emitting material with the multiband wavelength excitation similar double perovskite structure.
The preparation method of the QLED red light emitting device containing the red light emitting material with the multiband wavelength excitation and the double perovskite-like structure comprises the following steps:
A. will KEu be described2F7Mixing the nanocrystalline material and the silicone adhesive according to the mass ratio of 1:5, and then uniformly stirring;
B. and coating the uniformly mixed compound on an ultraviolet light, blue light or green light chip, drying and assembling the red light LED device.
Further, in the step B, the thickness of the coating is 0.8-1.2 mm; the drying is carried out for 2h in a drying oven at 60 ℃.
Compared with the prior art, the invention has the following beneficial effects:
firstly, the prepared target product is characterized by an X-ray diffractometer, a transmission electron microscope and a steady-state life fluorescence spectrometer respectively, and is calculated by combining GSAS software, and the chemical formula composition of the target product is KEu according to the result2F7(ii) a Wherein, KEu2F7The europium fluoride potassium fluoride powder is quadrilateral granular powder, the powder is granules with the grain diameter of 10-30 nm, and the europium fluoride potassium can emit red light under the excitation of ultraviolet light, blue light and green light.
Secondly, the preparation method is scientific and effective. The europium fluoride potassium red-light fluorescent powder with a double perovskite-like structure, which is a target product capable of being excited by ultraviolet light, blue light or green light, is prepared, and a red-light LED device can be assembled.
Drawings
FIG. 1 is KEu prepared in example 32F7XRD pattern of nanocrystalline material;
FIG. 2 is KEu prepared in example 32F7A TEM image of the nanocrystalline material;
FIG. 3 is KEu prepared in example 32F7And the emission spectra of the nanocrystalline material are respectively tested at 393nm, 463nm and 523nm of excitation wavelengths.
Detailed Description
The present invention will be described in detail with reference to examples.
Example 1
Multi-band wavelength excited double perovskite-like red light luminescent material europium fluoride potassium (KEu)2F7) The preparation method of the nanocrystalline material comprises the following steps:
(1) firstly, 0.5mmol of 0.1832g of europium chloride (EuCl) is taken3) Dissolving in 20ml of anhydrous methanol, and stirring to prepare Eu3+Europium chloride methanol solution with the ion concentration of 0.025 mol/L; 5mmol of potassium hydroxide (KOH) and 6mmol of ammonium fluoride (NH) were added4F) Dissolving in 10ml of anhydrous methanol to prepare the K-containing+、F-Adding the methanol solution of europium chloride dropwise into the K-containing methanol solution+、F-Stirring and mixing the mixture for 1 hour in a methanol solution to obtain a precursor solution;
(2) transferring the precursor solution into a hydrothermal reaction kettle, reacting for 12h at 100 ℃ to obtain a reaction solution, centrifugally separating the cooled reaction solution at a rotating speed of 8000r/min for 10min, alternately cleaning the separated solid substance for 3 times by using absolute ethyl alcohol, centrifugally separating after each cleaning, finally drying the cleaned solid substance at 100 ℃, and preparing to obtain KEu2F7The nanocrystalline material can emit red light under the excitation of ultraviolet light, blue light or green light.
Example 2
Multi-band wavelength excited double perovskite-like red light luminescent material europium fluoride potassium (KEu)2F7) The preparation method of the nanocrystalline material comprises the following steps:
(1) firstly, 0.5mmol of 0.1832g of europium chloride (EuCl) is taken3) Dissolving in 20ml of anhydrous methanol, and stirring to prepare Eu3+Ion(s)Europium chloride methanol solution with the concentration of 0.025 mol/L; then 7mmol of potassium hydroxide (KOH) and 6mmol of ammonium fluoride (NH) are taken4F) Dissolving in 10ml of anhydrous methanol to prepare the K-containing+、F-Adding the methanol solution of europium chloride dropwise into the K-containing methanol solution+、F-Stirring and mixing the mixture for 1 hour in a methanol solution to obtain a precursor solution;
(2) transferring the precursor solution into a hydrothermal reaction kettle, reacting for 10h at 110 ℃ to obtain a reaction solution, centrifugally separating the cooled reaction solution at a rotating speed of 10000r/min for 8min, alternately cleaning the separated solid substance for 3 times by using absolute ethyl alcohol, centrifugally separating after each cleaning, finally drying the cleaned solid substance at 100 ℃, and preparing to obtain KEu2F7The nanocrystalline material can emit red light under the excitation of ultraviolet light, blue light or green light.
Example 3
Multi-band wavelength excited double perovskite-like red light luminescent material europium fluoride potassium (KEu)2F7) The preparation method of the nanocrystalline material comprises the following steps:
(1) firstly, 0.5mmol of 0.1832g of europium chloride (EuCl) is taken3) Dissolving in 20ml of anhydrous methanol, and stirring to prepare Eu3+Europium chloride methanol solution with the ion concentration of 0.025 mol/L; then, 9mmol of potassium hydroxide (KOH) and 6mmol of ammonium fluoride (NH) were added4F) Dissolving in 10ml of anhydrous methanol to prepare the K-containing+、F-Adding the methanol solution of europium chloride dropwise into the K-containing methanol solution+、F-Stirring and mixing the mixture for 1 hour in a methanol solution to obtain a precursor solution;
(2) transferring the precursor solution into a hydrothermal reaction kettle, reacting for 8 hours at 120 ℃ to obtain reaction liquid, centrifugally separating the cooled reaction liquid for 5 minutes at the rotating speed of 11000r/min, alternately cleaning the separated solid matters for 3 times by using absolute ethyl alcohol, centrifugally separating after each cleaning, and finally drying the cleaned solid matters at 100 ℃ to prepare the powdery multiband wavelength excited double perovskite-like red light luminescent material.
This example preparationThe XRD pattern of the obtained product is shown in FIG. 1, and the composition of the product is calculated by GSAS software, which shows that the chemical formula of the product prepared by the embodiment is KEu2F7。
The TEM image of the product prepared in this example is shown in fig. 2, and it can be seen from the figure that the product is quadrilateral, and it can be seen that the product prepared by the present invention is quadrilateral granular powder.
The emission spectra of the products prepared in this example were measured at 393nm, 463nm, and 523nm excitation wavelengths, and the results are shown in FIG. 3, where it can be seen that the products can emit red light under the excitation of ultraviolet light, blue light, or green light.
Example 4
Multi-band wavelength excited double perovskite-like red light luminescent material europium fluoride potassium (KEu)2F7) The preparation method of the nanocrystalline material comprises the following steps:
(1) firstly, 0.5mmol of 0.1832g of europium chloride (EuCl) is taken3) Dissolving in 20ml of anhydrous methanol, and stirring to prepare Eu3+Europium chloride methanol solution with the ion concentration of 0.025 mol/L; then, 14mmol of potassium hydroxide (KOH) and 6mmol of ammonium fluoride (NH) were taken4F) Dissolving in 10ml of anhydrous methanol to prepare the K-containing+、F-Adding the methanol solution of europium chloride dropwise into the K-containing methanol solution+、F-Stirring and mixing the mixture for 1 hour in a methanol solution to obtain a precursor solution;
(2) transferring the precursor solution into a hydrothermal reaction kettle, reacting for 10h at 130 ℃ to obtain a reaction solution, centrifugally separating the cooled reaction solution at the rotating speed of 11000r/min for 5min, alternately cleaning the separated solid matters for 3 times by using absolute ethyl alcohol, centrifugally separating after cleaning each time, finally drying the cleaned solid matters at 100 ℃, and preparing to obtain KEu2F7The nanocrystalline material can emit red light under the excitation of ultraviolet light, blue light or green light.
Example 5
Multi-band wavelength excited double perovskite-like red light luminescent material europium fluoride potassium (KEu)2F7) Nanocrystalline materialThe preparation method comprises the following steps:
(1) firstly, 0.5mmol of 0.1832g of europium chloride (EuCl) is taken3) Dissolving in 20ml of anhydrous methanol, and stirring to prepare Eu3+Europium chloride methanol solution with the ion concentration of 0.025 mol/L; then 18mmol of potassium hydroxide (KOH) and 6mmol of ammonium fluoride (NH) are taken4F) Dissolving in 10ml of anhydrous methanol to prepare the K-containing+、F-Adding the methanol solution of europium chloride dropwise into the K-containing methanol solution+、F-Stirring and mixing the mixture for 1 hour in a methanol solution to obtain a precursor solution;
(2) transferring the precursor solution into a hydrothermal reaction kettle, reacting for 8h at 140 ℃ to obtain a reaction solution, centrifugally separating the cooled reaction solution at a rotating speed of 12000r/min for 5min, alternately cleaning the separated solid matters for 3 times by using absolute ethyl alcohol, centrifugally separating after each cleaning, finally drying the cleaned solid matters at 100 ℃, and preparing to obtain KEu2F7The nanocrystalline material can emit red light under the excitation of ultraviolet light, blue light or green light.
Application example 1
KEu prepared in example 32F7Mixing the nanocrystalline material and the silicone adhesive according to the mass ratio of 1:5, and then uniformly stirring; and (3) coating the uniformly mixed compound on an ultraviolet light LED chip, wherein the coating thickness is 1mm, then placing the ultraviolet light LED chip in a drying oven at 60 ℃ for drying for 2h, and finally assembling a red light QLED device according to a conventional method, wherein the red light QLED device can emit red light.
The above detailed description of a red light emitting material with a multi-band wavelength excitation and a double perovskite-like structure, its preparation method and application are illustrative and not restrictive, and several examples can be cited within the limits of the invention, so that changes and modifications without departing from the general concept of the invention shall fall within the protection scope of the invention.
Claims (10)
1. A red light luminescent material excited by multiband wavelength and having a double perovskite-like structure is characterized in that the red light luminescent material is europium potassium fluoride (KEu)2F7) A nanocrystalline material.
2. The multiband wavelength excited red light emitting material with a double perovskite-like structure according to claim 1, wherein the europium potassium fluoride nano-crystalline material is nano-sized granular powder with a particle size of 10-30 nm.
3. The method for preparing a red light emitting material of a multiband wavelength excitation double perovskite-like structure according to claim 1 or 2, wherein the method comprises the following steps:
(1) dropwise adding a methanol solution containing a europium source into a methanol solution containing a potassium source and a fluorine source, and stirring and mixing to obtain a precursor solution;
(2) and carrying out solvothermal reaction on the precursor solution at 100-140 ℃ for at least 8h to obtain a reaction solution, cooling the reaction solution, and carrying out solid-liquid separation, washing and drying on the reaction solution to obtain the multiband wavelength excited double perovskite-like red light luminescent material.
4. The method of claim 3, wherein the potassium source is potassium hydroxide.
5. The method of claim 3, wherein the fluorine source is ammonium fluoride.
6. The production method according to claim 3, characterized in that the europium source is europium chloride or europium nitrate.
7. The production method according to claim 3, wherein the ratio of the amounts of substances of europium source, potassium source, and fluorine source is 0.5: 5-18: 6.
8. the method according to claim 3, wherein the concentration of the fluorine source in the methanol solution containing the potassium source and the fluorine source is 0.3M to 0.9M; the concentration of the europium source in the methanol solution containing the europium source is 0.01M to 0.03M.
9. Use of a red light emitting material of double perovskite-like structure as claimed in claim 1 or 2 in a light emitting device.
10. A QLED red light emitting device comprising the red light emitting material of the multiband wavelength excited double perovskite-like structure of claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110158930.XA CN112940728B (en) | 2021-02-04 | 2021-02-04 | Red light luminescent material with multiband wavelength excitation and similar double perovskite structure, and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110158930.XA CN112940728B (en) | 2021-02-04 | 2021-02-04 | Red light luminescent material with multiband wavelength excitation and similar double perovskite structure, and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112940728A true CN112940728A (en) | 2021-06-11 |
| CN112940728B CN112940728B (en) | 2022-12-16 |
Family
ID=76242298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110158930.XA Active CN112940728B (en) | 2021-02-04 | 2021-02-04 | Red light luminescent material with multiband wavelength excitation and similar double perovskite structure, and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112940728B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117363347A (en) * | 2023-09-20 | 2024-01-09 | 安徽工程大学 | Green light luminescent material similar to double perovskite structure, and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4089799A (en) * | 1976-07-13 | 1978-05-16 | U.S. Philips Corporation | Luminescent fluoride |
| CN102897817A (en) * | 2012-10-17 | 2013-01-30 | 沈阳化工大学 | Preparation method for NaEuF4 microspheres |
-
2021
- 2021-02-04 CN CN202110158930.XA patent/CN112940728B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4089799A (en) * | 1976-07-13 | 1978-05-16 | U.S. Philips Corporation | Luminescent fluoride |
| CN102897817A (en) * | 2012-10-17 | 2013-01-30 | 沈阳化工大学 | Preparation method for NaEuF4 microspheres |
Non-Patent Citations (3)
| Title |
|---|
| A. PIERRARD，等: "Luminescence study of Eu3+:KGd2F7", 《SOLID STATE SCIENCES》 * |
| P. P. FEDOROV: "Systems of Alkali and Rare-Earth Metal Fluorides", 《RUSSIAN JOURNAL OF INORGANIC CHEMISTRY》 * |
| YOU FANGTIAN 等: "Hydrothermal synthesis of mixed rare earth-alkali metal or ammonium fluorides", 《JOURNAL OF RARE EARTHS》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117363347A (en) * | 2023-09-20 | 2024-01-09 | 安徽工程大学 | Green light luminescent material similar to double perovskite structure, and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112940728B (en) | 2022-12-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102851026B (en) | Red light material for bi-primary-color white light LEDs (light-emitting diodes) and preparation method thereof | |
| JP5005759B2 (en) | Fluorescent powder, method for producing the same, and light-emitting device using the same | |
| CN108003872B (en) | Fluoride red fluorescent powder for blue light excited white light LED and preparation and modification method thereof | |
| CN103627392B (en) | A kind of stibnate base red fluorescent powder and its preparation method and application | |
| CN109971477B (en) | Samarium-doped borophosphate orange-red fluorescent powder and preparation method and application thereof | |
| CN105733575A (en) | Tetravalent manganese ion doped ammonium salt red light material and preparation method thereof | |
| CN113072928A (en) | Preparation method of zero-dimensional manganese-based metal halide by ultrafast self-assembly | |
| CN112940728B (en) | Red light luminescent material with multiband wavelength excitation and similar double perovskite structure, and preparation method and application thereof | |
| CN103059849B (en) | Silicophosphate green fluorescent powder activated by Eu<2+> and preparation method as well as application thereof | |
| CN103289698B (en) | A kind of europium ion Eu 3+the phosphate base red fluorescence powder activated, preparation method and application | |
| CN103305216A (en) | Borate red fluorescent powder and preparation method and application thereof | |
| CN102433119A (en) | Tungsten molybdate red fluorescent powder for white light-emitting diode (LED) and preparation method of tungsten molybdate red fluorescent powder | |
| CN111606954A (en) | Sb3+Green fluorescent powder and preparation method thereof | |
| CN109722092B (en) | Super-sensitization light-emitting of red fluorescent powder for blue light excited LED and preparation method thereof | |
| CN116694323A (en) | Leadless double perovskite yellow light fluorescent powder and preparation method and application thereof | |
| CN106947481B (en) | A kind of red Illuminant nanometer fluorescent powder of europium ion activation, preparation method and application | |
| CN100595258C (en) | Alkaline earth halogen silicate phosphor powder and preparation method thereof | |
| CN103396800B (en) | Boron aluminate-based blue fluorescent powder, preparation method and application | |
| CN113265240B (en) | Efficient blue light-emitting Cd-based perovskite material and preparation method and application thereof | |
| CN114540031A (en) | Mn (manganese)4+Ion-doped tellurate red fluorescent powder and preparation method and application thereof | |
| CN110791282B (en) | Mn-doped steel wire4+Alkali metal fluoferrite red luminescent material and preparation method thereof | |
| CN114214063A (en) | Preparation method of single-matrix white light emitting carbon dot fluorescent powder | |
| CN106433637A (en) | Novel Mn<4+> activated high color purity fluoride red light emitting material preparation method | |
| CN104861969A (en) | Aluminum calcium titanate solid-solution type red phosphor and preparation method thereof | |
| CN113896738B (en) | Non-rare earth copper-iodine cluster-based yellow fluorescent powder and synthetic method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |